Submission #421392

#	Time	Username	Problem	Language	Result	Execution time	Memory
421392		Andyvanh1	Data Transfer (IOI19_transfer)	C++14	40 / 100	79 ms	2528 KiB

transfer

#include <bits/stdc++.h>
#include "transfer.h"
 
using namespace std;
 
#define vt vector
#define INF 0x3f3f3f3f
#define pb push_back
#define all(x) (x).begin(),(x).end()
#define rep(i,x) for(int (i) = 0;(i) < (x); (i)++)
#define MOD 1000000007
 
typedef vt<int> vi;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
 
bool jump(int x){
    cout<<x<<endl;
    bool ans;
    cin>>ans;
    return ans;
}
 
vi get_attachment(vi source){
    vi ans(9);
    int x = 0;
    int ct = 0;
    for(int i = 1; i <= 255; i++){
        x^=i*(source[i-1]);
 
    }
    for(int i = 0; i < 8; i++){
        ans[i] = ((1<<i)&x ? 1 : 0);
        if(ans[i])ct++;
    }
    ans[8] = ct&1;
 
    return ans;
}
 
vi retrieve(vi data){
 
 
    vi ans1(255);
    vi ans2(8);
    int ans3;
    for(int i = 0; i < 255; i++){
        ans1[i] = data[i];
    }
    for(int i = 255; i < 263; i++){
        ans2[i-255] = data[i];
    }
    ans3 = data[263];
    int x = 0;
    int y = 0;
    int z = 0;
 
    for(int i = 1; i <= 255; i++){
        x^=i*(ans1[i-1]);
 
    }
    int ct = 0;
    for(int i = 0; i < 8; i++){
        y+=(1<<i)*ans2[i];
        if(ans2[i])ct++;
 
    }
    if(x==y)return ans1;
 
 
 
    if((ct&1)!=ans3){
        return ans1;
    }else{
 
        ans1[(x^y)-1]^=1;
        return ans1;
    }
 
}

Compilation message (stderr)

transfer.cpp: In function 'vi retrieve(vi)':
transfer.cpp:57:9: warning: unused variable 'z' [-Wunused-variable]
   57 |     int z = 0;
      |         ^

• Subtask 1: 0 / 60
• Subtask 2: 40 / 40